Effects of reducing chemical fertilizer application on yields and nitrate contents of cherry tomato and spring cabbage
2005
Qiao Hongxia,Wang Xiude,Zhu Aifeng
chinois. 通过对樱桃番茄和春甘蓝进行化学肥料减量试验,结果表明,将氮磷钾养分含量控制在20.0 kg/666.7m. 内,樱桃番茄和春甘蓝都未减产,但硝酸盐有所降低.樱桃番茄增加叶面喷施后,产量增加,硝酸盐含量略有升高,但未超出允许范围.春甘蓝化学肥料减量增加叶面喷施后,硝酸盐有较大幅度的升高,其原因还有待进一步研究.
Afficher plus [+] Moins [-]anglais. The experiments of reducing chemical fertilizer application to the cherry tomato and spring cabbage fields were conducted in order to study the effects on their yields and nitrate contents. The results showed that when the N, P and K content of chemical fertilizer application was controlled within 20kg/666.7m. the yields of cherry tomato and spring cabbage did not decrease, but their nitrate contents somewhat reduced. Adding foliage spray made cherry tomato yield increase and its nitrate content slight high but still within the tolerance limit. Adding foliage spray rather bil~ marldn and the reason needs further research. increased the nitrate content of spring cabbage by a rather big margin and the reason needs further research.
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